Western US Swelters Under Unusual Winter Heat Wave

An extraordinary winter heat wave is scorching the western United States, with temperatures reaching record-breaking levels from California through the desert Southwest. San Francisco is experiencing its warmest March temperatures in over 20 years, drawing residents outdoors in unusual numbers.

SAN FRANCISCO (AP) — An extraordinary winter heat wave is blasting through the western United States, delivering record-threatening temperatures across a vast region spanning from California into the desert Southwest. The typically fog-shrouded city of San Francisco, known for its characteristically cool climate even during summer months, is witnessing residents peeling off winter clothing and gathering at popular outdoor spots like Crissy Field as the area endures its warmest March weather in more than 20 years.

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This represents a photo gallery assembled by AP photo editors.

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